chore(code stats): Use a shorter date string

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: amilcarlucas

scripts/generate_codebase_pie_chart.py

@@ -151,7 +151,7 @@ def create_codebase_pie_chart(sizes: list[int], categories: list[str], colors: l
     # Add title
     ax.set_title(
         "ArduPilot Methodic Configurator\nCodebase Structure by Lines of Code\n(Including Documentation & Configuration)\n"
-        + datetime.now(tz=timezone.utc).isoformat(),
+        + datetime.now(tz=timezone.utc).strftime('%Y-%m-%d %H:%M UTC'),
         fontsize=16,
         fontweight="bold",
         pad=20,